546 



BOTA NY. 



fleshy fruits, each containing fifty or more oily seeds (Figs. 511-13). 

 The seeds are roasted and then ground, and made into a paste and dried, 

 constituting the Chocolate or Cocoa of commerce, according as vanilla, 

 sugar, and other substances are, or are not added. Chocolate and Co- 

 coa contain TJieobromine (C 7 H 8 N 4 O 2 ), an alkaloid similar to Caffeine. 

 Order Malvaceae. The Mallow Family. Herbs, shrubs, and trees, 

 with alternate simple leaves ; stamens indefinite, united into a tube ; 



FIGS. 514-19. IIXUSTBATIOMS OP MALVACE.*; (Malva sylvestris). 



FIG. 517. 



FIG. 518. 



Magnified. Fig. 515. Androecium. Magnified. 

 Magnified. Fig. 517. -Calyx and pistil. Magnified. 



Fig. 518. -Flower diagram. Fig. 519.-Fruit: 



Fig. 514. Section of flower. 

 Fig. 51 6. -Stamen. " m 





anthers one-celled. Species about 700, widely distributed, but most 

 abundant in tropical regions. (Figs. 514-19.) 



Oosxypium herbaceum, the common Cotton Plant of tropical and sub- 

 tropical countries, was probably derived originally from some part of 

 India. Its culture by the East Indians and Egyptians was known 

 many centuries before the Christian era. In England the manufacture 

 and use of cotton cloth began during the latter part of the sixteenth 



